Get a tag of radiobutton

Question

as hz 2012-10-22

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/51550-get-a-tag-of-radiobutton

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Hi,

I am trying to get from a uibuttongroup with 3 radiobutton the tag of the selected radio button without successes.

Can someone please explain me what is the problem.

Thanks.

Code:

function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
handles.output = hObject;
[fn pn] = uigetfile('*.png','select png file');
complete = strcat(pn,fn);
set(handles.edit1,'string',complete);
sel= get(handles.strelPanel,'SelectedObject');
selradio= get(sel,'tag');
. 
.
.
% --- Executes when selected object is changed in strelPanel.
function strelPanel_SelectionChangeFcn(hObject, eventdata, handles)
% hObject    handle to the selected object in strelPanel 
% eventdata  structure with the following fields (see UIBUTTONGROUP)
%  EventName: string 'SelectionChanged' (read only)
%  OldValue: handle of the previously selected object or empty if none was selected
%  NewValue: handle of the currently selected object
% handles    structure with handles and user data (see GUIDATA)
guidata(hObject, handles);

Error msg:

Undefined variable "strelPanel" or class "strelPanel.cellData".
Error in FIA>pushbutton1_Callback (line 111)
sed= get(strelPanel.cellData)
Error in gui_mainfcn (line 96)
        feval(varargin{:});
Error in FIA (line 42)
    gui_mainfcn(gui_State, varargin{:});
Error in
@(hObject,eventdata)FIA('pushbutton1_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating uicontrol Callback

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Matt Fig 2012-10-22

编辑：Matt Fig 2012-10-22

在 MATLAB Online 中打开

There might be a language problem here. What I meant was that I do not see where you have defined the variable strelPanel in the pushbutton1_Callback function. If you do not define a variable but then try to use it, you will get an error. It looks like you try to use the variable here:

sed= get(strelPanel.cellData)

But you did not show where you defined strelPanel. It would look like this:

strelPanel = (something here to define the variable);

Additionally, why do you need the tag of the radiobutton??

Milos 2012-10-22

get(get(handles.uipanel1, 'SelectedObject'), 'Tag')); where uipanel1 is the tag of your uibuttongroup, and you will get the tag of the selected radio buttion

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Answer 1

Image Analyst 2012-10-22

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/51550-get-a-tag-of-radiobutton#answer_62870

在 MATLAB Online 中打开

You still haven't answered Matt's question of why you need it. If you just want to find out which one is selected, just ask. The radio buttons all DO have tags you know, that you can query the value of.

if get(handles.radio1, 'Value')
  msgbox('Radio button 1 is selected');
elseif get(handles.radio2, 'Value')
  msgbox('Radio button 2 is selected');
else
  msgbox('Radio button 3 is selected');
end